第1个回答 2019-11-20
that指人时，相当于who或者whom；指物时，相当于which。在宾语从句中做主语或者宾语，做宾语时可省略。
(5)
The
number
of
the
people
that/who
come
to
visit
the
city
each
year
rises
one
million.
(6)
Where
is
the
man
that/whom
I
saw
this
morning?
which指物，在定语从句中做主语或者宾语，做宾语时可省略
(1)
Football
is
a
game
which
is
liked
by
most
boys.
(2)
This
is
the
pen
(which)
he
bought
yesterday.
when指时间，在定语从句中做时间状语
(1)
I
still
remember
the
day
when
I
first
came
to
the
school.
(2)
The
time
when
we
got
together
finally
came.
where指地点，在定语从句中做地点状语
(1)
Shanghai
is
the
city
where
I
was
born.
(2)
The
house
where
I
lived
ten
years
ago
has
been
pulled
down.
3.
why指原因，在定语从句中做原因状语
(1)
Please
tell
me
the
reason
why
you
missed
the
plane.
(2)
I
don’t
know
the
reason
why
he
looks
unhappy
today.